Antenna selection method, device, electronic equipment and medium

Abstract

The disclosed embodiments provide an antenna selection method, device, electronic device and medium, which relate to the field of wireless communication technology. The method is applied to an air-to-ground communication ATG terminal, the ATG terminal is connected to a multi-faceted array antenna, and the multi-faceted array antenna includes multi-faceted antennas with different orientations. The method includes: obtaining a downlink signal received by each antenna of the multi-faceted array antenna; determining the signal quality of the downlink signal received by each antenna of the multi-faceted array antenna; selecting a target downlink signal whose signal quality meets a preset condition; and communicating with a ground ATG base station through an antenna that receives the target downlink signal. The communication quality of the ATG system is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technology, and in particular to an antenna selection method, device, electronic equipment and medium. Background Art

[0002] The Air to Ground (ATG) system is a communication system that provides mobile network services to users on aircraft. In the past, when the bandwidth demand for aviation mobile network services was relatively small, the ATG system could be deployed using dedicated frequencies to avoid co-frequency interference with the International Mobile Telecommunications (IMT) system on the ground. However, with the development of aviation mobile network services, the demand for service bandwidth continues to increase. Since the bandwidth of the dedicated frequency of the ATG system is relatively small, it has been difficult to meet actual business needs. In order to meet the bandwidth demand for aviation mobile services, the ATG system needs to be deployed using the same broadband frequency as the IMT system, that is, using a co-frequency networking solution.

[0003] When the ATG system and the IMT system adopt the same-frequency networking solution, the ATG terminal on the aircraft needs to receive the downlink signal transmitted by the ground ATG base station. However, the upper side lobe of the IMT base station antenna on the ground will also transmit the downlink signal of the same frequency into the air, and the downlink signal loss transmitted to the air is relatively small. Therefore, when a large number of ground IMT base stations transmit downlink same-frequency signals into the air, it will cause co-frequency interference to the downlink link of the ATG base station, and may even form an aggregate strong interference area in some airspace where a large number of IMT base station downlink signals are superimposed, seriously affecting the communication quality of the ATG system. Summary of the invention

[0004] The purpose of the embodiments of the present disclosure is to provide an antenna selection method, device, electronic device and medium to improve the communication quality of the ATG system. The specific technical solution is as follows:

[0005] In a first aspect, an embodiment of the present disclosure provides an antenna selection method, the method being applied to an air-to-ground communication ATG terminal, the ATG terminal being connected to a multi-faceted array antenna, the multi-faceted array antenna including multi-faceted antennas with different orientations, the method comprising:

[0006] Acquire a downlink signal received by each antenna of the multi-array antenna;

[0007] Determining the signal quality of the downlink signal received by each antenna of the multi-array antenna;

[0008] Select a target downlink signal whose signal quality meets preset conditions;

[0009] Communicate with the ground ATG base station via an antenna that receives the target downlink signal.

[0010] In a possible implementation manner, selecting a target downlink signal whose downlink signal quality meets a preset condition includes:

[0011] The downlink signal with the best signal quality is selected as the target downlink signal.

[0012] In a possible implementation manner, selecting a target downlink signal whose downlink signal quality meets a preset condition includes:

[0013] Determine a first downlink signal with the best signal quality received by the multi-array antenna;

[0014] Determine whether the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold;

[0015] If yes, taking the first downlink signal as the target downlink signal;

[0016] If not, determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively, where the first antenna is an antenna in the multi-faceted array antenna that receives the first downlink signal, and the second antenna is an antenna in the multi-faceted array antenna that receives the second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to the preset threshold;

[0017] The downlink signal received by the antenna having the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna is used as the target downlink signal.

[0018] In a possible implementation manner, the determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively includes:

[0019] Calculate projection areas of uplink signals of the first antenna and the second antenna on the ground respectively according to the flight direction and flight altitude of the aircraft and the orientation information of the first antenna and the second antenna;

[0020] Based on the pre-stored location information of ground IMT base stations that the aircraft route passes through, the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection area of ​​each second antenna are determined.

[0021] In a possible implementation, respectively calculating the projection areas of the uplink signals of the first antenna and each second antenna on the ground according to the flight direction and flight altitude of the aircraft and the orientation information of the first antenna and each second antenna includes:

[0022] Calculate the normal azimuth of the first antenna and each second antenna respectively according to the flight direction, the flight altitude, and the orientation information of the first antenna and each second antenna;

[0023] Based on the flight altitude and the normal azimuths of the first antenna and each second antenna, respectively calculating the projection center positions of the first antenna and each second antenna on the ground;

[0024] The projection areas of the first antenna and the second antennas are calculated respectively according to their respective projection center positions and beam widths of the transmission beams.

[0025] In a second aspect, an embodiment of the present disclosure provides an antenna selection device, the device is applied to an air-to-ground communication ATG terminal, the ATG terminal is connected to a multi-faceted array antenna, the multi-faceted array antenna includes multi-faceted antennas with different orientations, and the device includes:

[0026] An acquisition module, used to acquire a downlink signal received by each antenna of the multi-array antenna;

[0027] A determination module, used to determine the signal quality of the downlink signal received by each antenna of the multi-array antenna;

[0028] A selection module, used for selecting a target downlink signal whose signal quality meets a preset condition;

[0029] The communication module is used to communicate with the ground ATG base station through an antenna that receives the target downlink signal.

[0030] In a possible implementation, the selection module is specifically configured to:

[0031] The downlink signal with the best signal quality is selected as the target downlink signal.

[0032] In a possible implementation, the selection module is specifically configured to:

[0033] Determine a first downlink signal with the best signal quality received by the multi-array antenna;

[0034] Determine whether the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold;

[0035] If yes, taking the first downlink signal as the target downlink signal;

[0036] If not, determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively, where the first antenna is an antenna in the multi-faceted array antenna that receives the first downlink signal, and the second antenna is an antenna in the multi-faceted array antenna that receives the second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to the preset threshold;

[0037] The downlink signal received by the antenna having the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna is used as the target downlink signal.

[0038] In a possible implementation, the selection module is specifically configured to:

[0039] Calculate projection areas of uplink signals of the first antenna and the second antenna on the ground respectively according to the flight direction and flight altitude of the aircraft and the orientation information of the first antenna and the second antenna;

[0040] Based on the pre-stored location information of ground IMT base stations that the aircraft route passes through, the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection area of ​​each second antenna are determined.

[0041] In a possible implementation, the selection module is specifically configured to:

[0042] Calculate the normal azimuth of the first antenna and each second antenna respectively according to the flight direction, the flight altitude, and the orientation information of the first antenna and each second antenna;

[0043] Based on the flight altitude and the normal azimuths of the first antenna and each second antenna, respectively calculating the projection center positions of the first antenna and each second antenna on the ground;

[0044] The projection areas of the first antenna and the second antennas are calculated respectively according to their respective projection center positions and beam widths of the transmission beams.

[0045] In a third aspect, an embodiment of the present disclosure provides an electronic device, characterized in that it includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

[0046] Memory, used to store computer programs;

[0047] The processor is used to implement any of the above-mentioned antenna selection method steps when executing the program stored in the memory.

[0048] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any of the above-mentioned antenna selection method steps is implemented.

[0049] In a fifth aspect, an embodiment of the present disclosure further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any of the above-mentioned antenna selection methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 A schematic diagram of signal interference between an ATG system and an IMT system in the same frequency network provided in an embodiment of the present disclosure;

[0052] Figure 2 A schematic diagram of a flow chart of an antenna selection method provided in an embodiment of the present disclosure;

[0053] Figure 3 is a schematic diagram of a five-sided array antenna provided by an embodiment of the present disclosure;

[0054] Figure 4 A schematic diagram of another ATG system and IMT system co-frequency networking signal interference provided in an embodiment of the present disclosure;

[0055] Figure 5 A schematic diagram of a flow chart of another antenna selection method provided in an embodiment of the present disclosure;

[0056] Figure 6 A schematic diagram of the structure of an antenna selection device provided in an embodiment of the present disclosure;

[0057] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field based on the present disclosure belong to the scope of protection of the present disclosure.

[0059] The ATG terminal is an airborne terminal equipped on the aircraft in the ATG system. In the ATG system, ground ATG base stations are set up along the aircraft route. The ATG terminal is responsible for establishing a ground-to-air communication link with the ground ATG base station. In the cabin, the airborne ATG terminal provides wireless LAN data services to the user terminal on the aircraft. The user terminal can establish a connection with the ATG terminal via WIFI.

[0060] like Figure 1 As shown, Figure 1 A schematic diagram of the signal interference between the ATG system and the IMT system in the same frequency network provided in the embodiment of the present disclosure. When there is an IMT base station below the airspace where the aircraft is located, the ATG downlink signal transmitted by the ATG base station to the ATG terminal will be interfered by the downlink signal transmitted to the air by the upper side lobe of the IMT base station antenna, that is, Figure 1 The IMT interference in the air leads to poor communication quality of the ATG system.

[0061] In order to improve the communication quality of the ATG system, an embodiment of the present disclosure provides an antenna selection method, which is applied to an air-to-ground communication ATG terminal, the ATG terminal is connected to a multi-faceted array antenna, and the multi-faceted array antenna includes multi-faceted antennas with different directions, such as Figure 2 As shown, the method includes:

[0062] S201: Obtain a downlink signal received by each antenna of a multi-array antenna.

[0063] Among them, the multi-faceted array antenna can be installed on the aircraft, for example, it can be installed on the bottom of the aircraft. The embodiment of the present disclosure does not limit the installation position of the multi-faceted array antenna on the aircraft.

[0064] In the disclosed embodiment, in order to ensure the communication quality, the ATG terminal may use a multi-array antenna to receive the downlink signal transmitted by the ATG base station from multiple angles.

[0065] The number of antenna faces of the multi-faceted array antenna in the embodiment of the present disclosure can be flexibly set according to actual needs. As an example, the multi-faceted array antenna can be a five-faceted array antenna, such as Figure 3 As shown, Figure 3 An exemplary three-dimensional schematic diagram of a five-sided array antenna provided in an embodiment of the present disclosure, Figure 3 Only three antennas, antenna 1, antenna 2 and antenna 3, are shown, where antenna 1 and antenna 2 have one antenna on each of their opposite sides. The ATG terminal can receive downlink signals transmitted by the ATG base station from five directions through the five-sided array antenna, and can also transmit uplink signals to the ATG base station from five directions.

[0066] S202: Determine the signal quality of the downlink signal received by each antenna of the multi-array antenna.

[0067] The signal quality of the downlink signal received by each antenna may be the signal strength or signal-to-interference ratio of the downlink signal, or may be other parameters for indicating the signal quality, which is not limited in the embodiments of the present disclosure.

[0068] Since each antenna included in the multi-array antenna has a different orientation, the downlink signal received by each antenna is interfered with by the downlink signal transmitted by the IMT base station to a different extent. As a result, the signal quality of the downlink signal received by each antenna is also different.

[0069] like Figure 4 As shown, Figure 4 Another schematic diagram of co-frequency networking signal interference between an ATG system and an IMT system provided in an embodiment of the present disclosure is provided. Figure 4 The ATG terminal receives the downlink signal transmitted by the ATG base station through the above-mentioned five-sided array antenna. The downlink signal transmitted by the ATG base station in area 1 can be received by antenna 2 and antenna 3, but the downlink signal received by antenna 2 will be interfered by the downlink signal transmitted by the IMT base station in area 2, and the downlink signal received by antenna 3 will be interfered by the downlink signal transmitted by the IMT base station in area 3. The downlink signals received by antenna 2 and antenna 3 are subject to different degrees of interference, and thus the signal quality of the downlink signals received by antenna 2 and antenna 3 is different.

[0070] S203: Select a target downlink signal whose signal quality meets a preset condition.

[0071] Among them, the preset conditions can be set according to actual needs, and the specific process of selecting the target downlink signal will be described in detail in subsequent embodiments.

[0072] S204, communicating with the ground ATG base station via an antenna that receives the target downlink signal.

[0073] Among them, the ATG terminal can currently process the target downlink signal and ignore the downlink signals from the ATG base station received by other antennas. If an uplink signal needs to be sent to the base station, the uplink signal is sent to the base station through the antenna that receives the target downlink signal.

[0074] It should be noted that the aircraft will pass through different airspaces during the flight. The distribution and number of IMT base stations on the ground in different airspaces will be different. The degree of interference to the downlink signal received by each antenna of the multi-array antenna will continue to change with the flight of the aircraft. Therefore, during the flight of the aircraft, each time the ATG terminal receives a downlink signal through the multi-array antenna, it can execute steps S202-S204 to reselect an antenna for communicating with the ground ATG base station.

[0075] By adopting the embodiment of the present disclosure, the ATG terminal can receive downlink signals through each antenna of the multi-faceted array antenna. Since each antenna in the multi-faceted array antenna has a different orientation, the downlink signal received by each antenna is subject to different interference, and the signal quality of the downlink signal can reflect the degree of interference of the downlink signal. Therefore, the ATG terminal in the embodiment of the present disclosure can select a target downlink signal whose signal quality meets the preset conditions based on the signal quality of each downlink signal received, and then communicate with the ATG base station through an antenna that receives the target downlink signal, thereby avoiding the use of antennas with a greater degree of interference as much as possible, thereby improving the communication quality of the ATG system.

[0076] In some embodiments of the present disclosure, the above S203, selecting a target downlink signal whose signal quality meets a preset condition, may be implemented as follows: the ATG terminal selects a downlink signal with the best signal quality as the target downlink signal.

[0077] Taking the signal quality as signal strength as an example, the ATG signal can select the downlink signal with the largest signal strength as the target downlink signal.

[0078] For example, Figure 4 The ATG terminal receives two groups of downlink signals through antenna 2 and antenna 3 in the five-sided array antenna, namely downlink signal A and downlink signal B. The signal strengths of downlink signal A and downlink signal B are -60dbm and -70dbm respectively. At this time, the ATG terminal can directly select the downlink signal A with the strongest signal strength as the target downlink signal.

[0079] By adopting the embodiment of the present disclosure, the ATG terminal can select the downlink signal with the best signal quality as the target downlink signal. Since the signal quality can reflect the degree of interference to the downlink signal, the signal quality of the target downlink signal is the best, that is, the degree of interference to the target downlink signal is the smallest. Furthermore, the ATG terminal communicates with the ground ATG base station through an antenna that receives the target downlink signal, thereby improving the communication quality of the ATG system.

[0080] In addition, not only will the downlink signal transmitted by the IMT base station interfere with the downlink signal transmitted by the ATG base station, but the downlink signals transmitted by adjacent ATG base stations will also interfere with each other. The embodiment of the present disclosure selects the downlink signal with the best signal quality as the target downlink signal, which can also reduce the impact of mutual interference between downlink signals transmitted by adjacent ATG base stations on the communication quality of the ATG system.

[0081] In actual application scenarios, the signal quality of the downlink signal received by each antenna of the multi-array antenna may be similar. In this case, the target downlink signal can also be determined by referring to the number of base stations covered by the uplink signal of each antenna in the multi-array antenna, such as Figure 5As shown, the above S203, selecting the target downlink signal whose downlink signal quality meets the preset condition, can also be specifically implemented as follows:

[0082] S2031. Determine the first downlink signal with the best signal quality received by the multi-array antenna.

[0083] In the disclosed embodiment, the signal strength or signal-to-interference ratio of the downlink signal received by each antenna may be compared to select the downlink signal with the strongest signal strength or the largest signal-to-interference ratio as the first downlink signal.

[0084] For example, Figure 4 As shown, it is assumed that as the aircraft flies, the orientation of the five-sided array antenna installed on the aircraft changes, so that antenna 1 can also receive the downlink signal transmitted by the ATG base station in area 1. The downlink signals received by antenna 1, antenna 2 and antenna 3 are downlink signal 1, downlink signal 2 and downlink signal 3 respectively. If the signal quality of downlink signal 2 is greater than the signal quality of downlink signal 3, and the signal quality of downlink signal 2 is greater than the signal quality of downlink signal 1, it can be determined that downlink signal 2 is the first downlink signal.

[0085] S2032: Determine whether the differences in signal quality between the first downlink signal and other downlink signals are greater than a preset threshold. If yes, execute S2035; if no, execute S2033.

[0086] The preset threshold value may be set according to actual needs, and the embodiment of the present disclosure does not specifically limit the specific value of the preset threshold value.

[0087] S2033: Determine the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively.

[0088] Among them, the first antenna is an antenna in the multi-faceted array antenna that receives a first downlink signal, the second antenna is an antenna in the multi-faceted array antenna that receives a second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to a preset threshold.

[0089] In the embodiment of the present disclosure, the number of the second antenna may be one or more.

[0090] Continuing with the example in S2031, Figure 4 In the figure, the signal quality of downlink signal 2 is the best. If the difference in signal quality between downlink signal 2 and downlink signal 3 is less than or equal to the preset threshold, and the difference in signal quality between downlink signal 2 and downlink signal 1 is greater than the preset threshold, it means that the signal qualities of downlink signal 2 and downlink signal 3 are close. Then antenna 2 and antenna 3 are the first antenna and the second antenna respectively, and downlink signal 3 is the second downlink signal.

[0091] For another example, the signal quality of downlink signal 2 is the best. If the difference in signal quality between downlink signal 2 and downlink signal 3 is less than or equal to the preset threshold, and the difference in signal quality between downlink signal 2 and downlink signal 1 is also less than or equal to the preset threshold, it means that the signal qualities of antenna 1, antenna 2 and antenna 3 are close. Then antenna 2 is the first antenna, antenna 1 and antenna 3 are both second antennas, downlink signal 1 and downlink signal 3 are both second downlink signals. At this time, there are two second antennas and two second downlink signals.

[0092] S2034: Use the downlink signal received by the antenna with the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna as the target downlink signal.

[0093] Figure 1 The ATG terminal on the aircraft will also transmit ATG uplink signals to the ATG base station on the ground through the multi-array antenna. The ATG uplink signals transmitted by the ATG terminal to the ground through the multi-array antenna will also interfere with the IMT uplink signals normally received by the IMT base station, affecting the communication quality of the IMT system.

[0094] Among them, the number of IMT base stations covered by the uplink signal of each antenna of the multi-array antenna can reflect the interference degree of the ATG uplink signal emitted by each antenna of the multi-array antenna to the IMT uplink signal. The more IMT base stations covered by the signal on each antenna, the greater the interference degree to the IMT uplink signal.

[0095] Since the difference in signal quality between the first downlink signal received by the first antenna and the second downlink signal received by the second antenna is less than or equal to the preset threshold, that is to say, the signal quality of the first downlink signal and the second downlink signal are similar. In this case, in order to reduce the interference degree of the uplink signal transmitted by the subsequent ATG terminal to the IMT system, the downlink signal received by the antenna with the least number of IMT base stations covered by the uplink signal can be selected from the first antenna and the second antenna as the target downlink signal, and then the antenna receiving the target downlink signal can be used to communicate with the ATG base station. In this way, when the ATG terminal uses the antenna to transmit the ATG uplink signal, the number of ground IMT base stations that are interfered with is minimized, and the possibility of the downlink signal received by the ATG terminal being subject to the aggregate strong interference formed by the superposition of the downlink signals transmitted to the air by the IMT base station can be reduced.

[0096] Continuing with the example in S2033, if antenna 2 is the first antenna, and antenna 1 and antenna 3 are both second antennas, it is necessary to determine the number of IMT base stations covered by the uplink signals of antenna 1, antenna 2, and antenna 3 respectively, and take the downlink signal received by the antenna with the least number of IMT base stations covered by the uplink signal as the target downlink signal.

[0097] Among them, after executing S2034, there is no need to continue executing S2035.

[0098] S2035. Use the first downlink signal as the target downlink signal.

[0099] In the disclosed embodiment, since the signal quality of the first downlink signal is the best, and the differences in signal quality between the first downlink signal and other downlink signals are greater than the preset threshold, it means that the interference degree of the first downlink signal is much smaller than the interference degree of other downlink signals, so the first downlink signal can be used as the target downlink signal.

[0100] For example, Figure 4 As shown, assuming that as the aircraft flies, Figure 4 The orientation of the pentaminc array antenna has changed significantly, resulting in the signal quality of downlink signal 1 received by antenna 1 being greater than the signal qualities of downlink signal 2 and downlink signal 3, and the difference in signal quality between downlink signal 1 and downlink signal 2 and downlink signal 3 is greater than the preset threshold, then downlink signal 1 is the target downlink signal.

[0101] By adopting the embodiment of the present disclosure, the ATG terminal can determine the first downlink signal with the best signal quality. If the difference in signal quality between the first downlink signal and other downlink signals is greater than the preset threshold, it means that the interference degree of the first downlink signal is much less than the interference degree of other downlink signals. The first downlink signal with the least interference degree is used as the target downlink signal, which can avoid using the downlink signal with a large interference degree, thereby improving the communication quality of the ATG system. If there is a second downlink signal with a signal quality similar to that of the first downlink signal, it means that the signal quality of the first downlink signal and the second downlink signal are similar. When the antenna with the least number of IMT base stations covered by the uplink signal is selected to receive and transmit the uplink signal, the number of terrestrial IMT base stations that are interfered with is the least, so the downlink signal received by the antenna with the least number of IMT base stations covered is selected as the target downlink signal, which can reduce the interference to the IMT system and improve the communication quality of the IMT system. At the same time, since the antenna receiving the target downlink signal covers the least number of IMT base stations, the possibility of the ATG terminal being subjected to the aggregate strong interference superimposed by the downlink signal transmitted by the IMT base station to the air can be reduced, thereby improving the communication quality of the ATG system. It can be seen that the communication quality of the IMT system and the ATG system can be taken into account by adopting this method.

[0102] In another embodiment of the present disclosure, in the above S2033, the method for determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively is:

[0103] Step 1: According to the flight direction and altitude of the aircraft and the orientation information of the first antenna and each second antenna, the projection areas of the uplink signals of the first antenna and each second antenna on the ground are calculated respectively.

[0104] In the disclosed embodiment, the ATG terminal on the aircraft can collect the flight direction, flight altitude, and orientation information of the first antenna and each second antenna of the aircraft in real time.

[0105] Step one can be specifically implemented as follows: according to the flight direction, flight altitude and the orientation information of the first antenna and each second antenna, respectively calculate the normal azimuth of the first antenna and each second antenna; based on the flight altitude and the normal azimuth of the first antenna and each second antenna, respectively calculate the projection center position of the first antenna and each second antenna on the ground; according to the respective projection center positions of the first antenna and each second antenna and the beam width of the transmitting beam, respectively calculate the projection area of ​​the first antenna and each second antenna.

[0106] The normal azimuth of the antenna is the azimuth of the normal line of the antenna. The normal line of the antenna refers to a straight line that is always perpendicular to the plane where the antenna is located. The azimuth of the normal line refers to the angle from the north end of the meridian to the normal line in a clockwise direction.

[0107] The projection center position of the antenna is the position of the point where the normal of the antenna is projected on the ground. The projection areas on the ground of the beams emitted by the first antenna and each second antenna are the projection areas of the first antenna and each second antenna respectively. The wider the beam width emitted by the antenna, the larger the projection area, and the larger the projection area of ​​the antenna.

[0108] Step 2: Based on the pre-saved location information of the ground IMT base stations along the aircraft route, determine the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection areas of each second antenna.

[0109] In the disclosed embodiment, the location information of the ground IMT base stations in the area through which the aircraft route passes can be pre-stored in the ATG terminal. The ATG terminal can determine the number and locations of the IMT base stations in the area below the current airspace where the aircraft is currently located based on the current airspace where the aircraft is located, and then, can count the number of IMT base stations in the projection area of ​​the first antenna and the projection area of ​​the second antenna.

[0110] The number of IMT base stations covered by the uplink signal of the first antenna is specifically the number of IMT base stations included in the projection area of ​​the first antenna. Similarly, the number of IMT base stations covered by the uplink signal of the second antenna is specifically the number of IMT base stations included in the projection area of ​​the second antenna.

[0111] By adopting the embodiments of the present disclosure, the ATG terminal can calculate the projection area on the ground of the uplink signals transmitted by the first antenna and the second antenna according to the flight direction, flight altitude, and the orientation of the first antenna and the second antenna in real time, and then determine the number of IMT base stations in the projection area of ​​the first antenna and the second antenna, and use the downlink signal received by the antenna with the least number of IMT base stations in the projection area as the target downlink signal. The ATG terminal uses the antenna with the least number of IMT base stations in the projection area to transmit the uplink signal, so that the number of IMT base stations interfered by the uplink signal transmitted by the ATG terminal is minimized, thereby reducing the interference of the ATG terminal to the ground IMT system when transmitting the uplink signal, improving the communication quality of the IMT system, and at the same time reducing the possibility of the ATG terminal being subject to aggregate strong interference when receiving the downlink signal, thereby improving the communication quality of the ATG system.

[0112] Based on the same inventive concept, the embodiment of the present disclosure also provides an antenna selection device, which is applied to an air-to-ground communication ATG terminal, the ATG terminal is connected to a multi-faceted array antenna, and the multi-faceted array antenna includes multi-faceted antennas with different directions, such as Figure 6 As shown, the device comprises:

[0113] An acquisition module 601 is used to acquire a downlink signal received by each antenna of the multi-array antenna;

[0114] A determination module 602 is used to determine the signal quality of the downlink signal received by each antenna of the multi-array antenna;

[0115] A selection module 603 is used to select a target downlink signal whose signal quality meets a preset condition;

[0116] The communication module 604 is used to communicate with the ground ATG base station through an antenna that receives the target downlink signal.

[0117] Optionally, the selection module 603 is specifically used for:

[0118] The downlink signal with the best signal quality is selected as the target downlink signal.

[0119] Optionally, the selection module 603 is specifically used for:

[0120] Determine the first downlink signal with the best signal quality received by the multi-array antenna;

[0121] Determine whether the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold;

[0122] If yes, taking the first downlink signal as the target downlink signal;

[0123] If not, determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively, the first antenna is an antenna in the multi-faceted array antenna that receives the first downlink signal, the second antenna is an antenna in the multi-faceted array antenna that receives the second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to a preset threshold;

[0124] The downlink signal received by the antenna having the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna is used as the target downlink signal.

[0125] Optionally, the selection module 603 is specifically used for:

[0126] According to the flight direction and altitude of the aircraft and the orientation information of the first antenna and each second antenna, respectively calculate the projection area of ​​the uplink signal of the first antenna and each second antenna on the ground;

[0127] Based on the pre-stored location information of the ground IMT base stations that the aircraft route passes through, the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection areas of each second antenna are determined.

[0128] Optionally, the selection module 603 is specifically used for:

[0129] Calculate the normal azimuth of the first antenna and each second antenna according to the flight direction, the flight altitude, and the orientation information of the first antenna and each second antenna;

[0130] Based on the flight altitude and the normal azimuths of the first antenna and each second antenna, respectively calculating the projection center positions of the first antenna and each second antenna on the ground;

[0131] The projection areas of the first antenna and the second antennas are calculated respectively according to their respective projection center positions and beam widths of the transmission beams.

[0132] The present disclosure also provides an electronic device, such as Figure 7 As shown, it includes a processor 701 , a communication interface 702 , a memory 703 and a communication bus 704 , wherein the processor 701 , the communication interface 702 , and the memory 703 communicate with each other via the communication bus 704 .

[0133] Memory 703, used for storing computer programs;

[0134] The processor 701 is configured to implement any of the above antenna selection method steps when executing the program stored in the memory 703.

[0135] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0136] The communication interface is used for communication between the above electronic device and other devices.

[0137] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0138] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0139] In another embodiment provided by the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above antenna selection methods are implemented.

[0140] In another embodiment provided by the present disclosure, a computer program product including instructions is also provided, and when the computer program product is run on a computer, the computer is enabled to execute any antenna selection method in the above embodiments.

[0141] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk Solid State Disk (SSD)), etc.

[0142] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0143] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0144] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure are included in the protection scope of the present disclosure.

Claims

1. An antenna selection method, characterized in that: The method is applied to an air-to-ground communication ATG terminal, wherein the ATG terminal is connected to a multi-faceted array antenna, wherein the multi-faceted array antenna includes multi-faceted antennas with different orientations; the method comprises: Acquire a downlink signal received by each antenna of the multi-array antenna; Determining the signal quality of the downlink signal received by each antenna of the multi-array antenna; Select a target downlink signal whose signal quality meets preset conditions; Communicating with a ground ATG base station via an antenna that receives the target downlink signal; The step of selecting a target downlink signal whose signal quality satisfies a preset condition comprises: Determine a first downlink signal with the best signal quality received by the multi-array antenna; Determine whether the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold; If not, determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively, where the first antenna is an antenna in the multi-faceted array antenna that receives the first downlink signal, and the second antenna is an antenna in the multi-faceted array antenna that receives the second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to the preset threshold; The downlink signal received by the antenna having the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna is used as the target downlink signal.

2. The method according to claim 1, characterized in that The step of selecting a target downlink signal whose signal quality satisfies a preset condition comprises: The downlink signal with the best signal quality is selected as the target downlink signal.

3. The method according to claim 1, characterized in that The step of selecting a target downlink signal whose signal quality meets a preset condition further includes: If it is determined that the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold, the first downlink signal is used as the target downlink signal.

4. The method according to claim 1, characterized in that: The determining the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively includes: Calculate the projection areas of the uplink signals of the first antenna and the second antenna on the ground respectively according to the flight direction and the flight altitude of the aircraft and the orientation information of the first antenna and the second antenna; Based on the pre-stored location information of ground IMT base stations that the aircraft route passes through, the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection area of ​​each second antenna are determined.

5. The method according to claim 4, characterized in that The calculating, according to the flight direction and altitude of the aircraft and the orientation information of the first antenna and each second antenna, respectively projecting areas of the uplink signals of the first antenna and each second antenna on the ground includes: Calculate the normal azimuth of the first antenna and each second antenna respectively according to the flight direction, the flight altitude, and the orientation information of the first antenna and each second antenna; Based on the flight altitude and the normal azimuths of the first antenna and each second antenna, respectively calculating the projection center positions of the first antenna and each second antenna on the ground; The projection areas of the first antenna and the second antennas are calculated respectively according to their respective projection center positions and beam widths of the transmission beams.

6. An antenna selection device, characterized in that: The device is applied to an air-to-ground communication ATG terminal, the ATG terminal is connected to a multi-faceted array antenna, the multi-faceted array antenna includes multi-faceted antennas with different orientations, and the device includes: An acquisition module, used to acquire a downlink signal received by each antenna of the multi-array antenna; A determination module, used to determine the signal quality of the downlink signal received by each antenna of the multi-array antenna; A selection module, used for selecting a target downlink signal whose signal quality meets a preset condition; The selection module is specifically used to determine the first downlink signal with the best signal quality received by the multi-faceted array antenna; determine whether the differences in signal quality between the first downlink signal and other downlink signals are greater than a preset threshold; if not, determine the number of IMT base stations covered by the uplink signals of the first antenna and the second antenna respectively, the first antenna is the antenna in the multi-faceted array antenna that receives the first downlink signal, the second antenna is the antenna in the multi-faceted array antenna that receives the second downlink signal, and the difference in signal quality between the first downlink signal and the second downlink signal is less than or equal to the preset threshold; and use the downlink signal received by the antenna with the least number of IMT base stations covered by the uplink signals of the first antenna and the second antenna as the target downlink signal; The communication module is used to communicate with the ground ATG base station through an antenna that receives the target downlink signal.

7. The device according to claim 6, characterized in that The selection module is specifically used for: The downlink signal with the best signal quality is selected as the target downlink signal.

8. The device according to claim 6, characterized in that The selection module is specifically used for: If it is determined that the differences in signal quality between the first downlink signal and other downlink signals are both greater than a preset threshold, the first downlink signal is used as the target downlink signal.

9. The device according to claim 8, characterized in that The selection module is specifically used for: Calculate the projection areas of the uplink signals of the first antenna and the second antenna on the ground respectively according to the flight direction and the flight altitude of the aircraft and the orientation information of the first antenna and the second antenna; Based on the pre-stored location information of ground IMT base stations that the aircraft route passes through, the number of IMT base stations included in the projection area of ​​the first antenna and the number of IMT base stations included in the projection area of ​​each second antenna are determined.

10. The device according to claim 9, characterized in that The selection module is specifically used for: Calculate the normal azimuth of the first antenna and each second antenna respectively according to the flight direction, the flight altitude, and the orientation information of the first antenna and each second antenna; Based on the flight altitude and the normal azimuths of the first antenna and each second antenna, respectively calculating the projection center positions of the first antenna and each second antenna on the ground; The projection areas of the first antenna and the second antennas are calculated respectively according to their respective projection center positions and beam widths of the transmission beams.

11. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing the method steps described in any one of claims 1 to 5 when executing a program stored in a memory.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 5 are implemented.

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